Uninterruptable power supply



FIG. 1 is a perspective view of an uninterruptible power supply, showingour new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a right side elevation view thereof; the left side elevationview is a mirror image thereto; and,

FIG. 5 is a top plan view thereof.

The broken line showing of the environment is for illustrative purposesonly and forms no part of the claimed design.

The ornamental design for an uninterruptible power supply, as shown anddescribed.